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https://git.suyu.dev/suyu/dynarmic.git
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349d4b577a
Removes unnecessary header dependencies that have accumulated over time as changes have been made. Lessens the amount of files that need to be rebuilt when the headers change.
64 lines
2.0 KiB
C++
64 lines
2.0 KiB
C++
/* This file is part of the dynarmic project.
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* Copyright (c) 2018 MerryMage
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* This software may be used and distributed according to the terms of the GNU
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* General Public License version 2 or any later version.
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*/
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#pragma once
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#include <algorithm>
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#include <functional>
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#include <optional>
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#include <set>
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#include <string>
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#include <vector>
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#include "common/bit_util.h"
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#include "common/common_types.h"
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#include "frontend/decoder/decoder_detail.h"
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#include "frontend/decoder/matcher.h"
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namespace Dynarmic::A64 {
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template <typename Visitor>
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using Matcher = Decoder::Matcher<Visitor, u32>;
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template <typename Visitor>
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std::vector<Matcher<Visitor>> GetDecodeTable() {
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std::vector<Matcher<Visitor>> table = {
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#define INST(fn, name, bitstring) Decoder::detail::detail<Matcher<Visitor>>::GetMatcher(&Visitor::fn, name, bitstring),
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#include "a64.inc"
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#undef INST
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};
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std::stable_sort(table.begin(), table.end(), [](const auto& matcher1, const auto& matcher2) {
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// If a matcher has more bits in its mask it is more specific, so it should come first.
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return Common::BitCount(matcher1.GetMask()) > Common::BitCount(matcher2.GetMask());
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});
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// Exceptions to the above rule of thumb.
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const std::set<std::string> comes_first {
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"MOVI, MVNI, ORR, BIC (vector, immediate)",
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"FMOV (vector, immediate)",
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"Unallocated SIMD modified immediate",
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};
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std::stable_partition(table.begin(), table.end(), [&](const auto& matcher) {
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return comes_first.count(matcher.GetName()) > 0;
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});
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return table;
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}
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template<typename Visitor>
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std::optional<std::reference_wrapper<const Matcher<Visitor>>> Decode(u32 instruction) {
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static const auto table = GetDecodeTable<Visitor>();
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const auto matches_instruction = [instruction](const auto& matcher) { return matcher.Matches(instruction); };
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auto iter = std::find_if(table.begin(), table.end(), matches_instruction);
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return iter != table.end() ? std::optional<std::reference_wrapper<const Matcher<Visitor>>>(*iter) : std::nullopt;
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}
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} // namespace Dynarmic::A64
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